Helical pile and bracket module comprising the same

ABSTRACT

Provided are a helical pile and a bracket module comprising the same. The helical pile includes a column body, at least a helical blade and a loading member. The column body has a fixing end, a loading end opposite to the fixing end, and a body section between the fixing end and the loading end. The helical blade is disposed on the column body between the fixing end and the loading end. The loading member is connected to the loading end of the column body and includes a flange. The ratio of the body diameter of the column body to the blade diameter of the helical blade ranges from 1:3 to 1:7. The helical pile features excellent compression bearing capacity and uplift bearing capacity due to its specific element-size ratio, and is applicable for installation in areas subject to harsh conditions or with peculiar geological features or soil conditions.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application is a continuation-in-part of Ser. No. 17/206,606, filedon Mar. 19, 2021, and claims the benefit under 35 U.S.C. § 119 of TaiwanPatent Application Ser. Nos. 109111226 filed on Apr. 1, 2020 and111200357, filed on Jan. 11, 2022, which are incorporated herein byreference in their entirety.

Some references, which may include patents, patent applications, knownarts, and various publications, may be cited and discussed in thedescription of this disclosure. The citation and/or discussion of suchreferences is provided merely to clarify the description of the presentdisclosure and this provision should not be construed to mean that anysuch references are “prior arts” to the disclosure described herein. Allreferences cited and discussed in this specification are incorporatedherein by reference in their entirety and to the same extent as if eachreference was individually incorporated by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a helical pile and a bracket modulecomprising the same, and more particularly to a helical pile and abracket comprising the same for solar equipment.

BACKGROUND

With the rapid development of the green energy industry, solar-relatedequipment has become one of the major research and development goals inthe energy development-related field. In general, solar cell panels forsolar equipment may be installed on the roofs of buildings or on theground for being irradiated by sunlight. However, in that the structuralstrength and the installation efficiency of the brackets for solar cellpanels to be mounted on the ground greatly depends on the geologicnature of the ground, there is a need to develop and provide suitablesolar cell bracket modules for various kinds of terrain or soil.

Traditionally, in order to enable the installed solar cell panels towithstand severe weather and natural disasters, such as strong winds,typhoons, geological activities and earthquake, etc., an additionalfoundation was provided. In particular, it is common to erect supportcolumns on concrete in advance to fasten the brackets for the solar cellpanels thereon. However, providing such foundations requires groundexcavation and pouring cement, processes that entail additionalconstruction and material costs. In addition, the installation processfor such foundations is complicated and does harm to the environment.

In response to the above problems, the existing art uses piles toprovide a supporting structure for the solar cell panels. Compared tothe time-consuming and costly process of providing cement foundations,piles may be pressed or otherwise installed into the ground relativelyquickly to accommodate the brackets of the solar cell panels, therebysignificantly reducing the construction cost. Using helical piles asadditional foundations is a solution widely adopted in recent years. Ingeneral, a helical pile is a steel tube with helical blades and having atube length from 0.55 to 2.7 meters and a diameter from 60 to 219millimeters. The upper portion of the helical pile is exposed above theground, and the height of the bracket above the ground may be adjustedaccording to varied terrain. Fixing members, such as screws, may be usedto connect the pile with other supporting structures attached to thesolar cell panels. During the construction process, the helical pilesmay be installed in the ground by using electric pile drivers or helicalpile drivers.

Reference is made to FIG. 1, wherein FIG. 1 is an orthographic side viewof a pile-type supporting structure for the solar cell panels of theexisting art. As shown in FIG. 1, the pile-type supporting structure forthe solar cell panels may be a helical pile P′ having a column body 1′and a helical blade 2′ disposed on the column body 1′. In other words,the helical pile P′ of the existing art shown in FIG. 1 has a structurequite similar to that of a typical screw.

However, the inventors of the present disclosure have discovered thatthe helical pile P′ of the existing art shown in FIG. 1 is only suitablefor sites at which the soil is dense and stable, or at which thehardness of the ground is relatively high.

Specifically, when the helical pile P′ is pressed or screwed into theground, it is difficult to control the plumbness (verticality) of thehelical pile P′ with respect to level ground. In addition, a pluralityof helical piles P′ carrying the same solar cell panel will requireaccurate adjustment of their heights (i.e., to have either uniformheights or to have varied heights with predetermined differencesthereof).

Moreover, in addition to providing sufficient support (load bearing) forthe solar cell panels, the helical pile P′ is generally required to bewind-resistant, i.e., to have an excellent uplift-resistant coefficient(also referred to as an uplift bearing capacity). However, the helicalpiles P′ of the existing art do not feature uplift-resistant coefficientsufficient for areas with certain soil conditions, such as those withsofter soils in which displacement may easily occur, for example, anintertidal zone or a rocky beach area. Moreover, the bearing capacity ofthe helical piles carrying a solar cell panel should be taken intoconsideration while selecting applicable pile structures. In otherwords, the helical piles are required to have appropriate compressionbearing capacity. Moreover, regarding the brackets for the solar cellpanels installed at coastal sites, a higher maintenance frequency andlarger reinforcing strength are required to sustain the usability of thebrackets in response to the influence by the coastal surroundings, oceancurrents and humid weather. Specifically, in various areas aroundSouth-East Asia, the regular monsoons from the Indian Ocean result in anenvironment with high temperatures, high humidity and high salinity,along with high irradiance from the tropical sun, making such areasamong the worst in the world in terms of corrosion. In addition, theenvironment along the coast may suffer from high lateral pressures, highacid-base concentrations and high thermal stress, as well as higherosion and abrasion due to the natural surroundings. Therefore, thebrackets for the solar cell panels installed in these areas are furtherrequired to exhibit excellent anti-corrosion properties.

In summary, in the technical field of pile structures for solarequipment, there is a need to provide helical piles for solar equipmenthaving sufficient uplift bearing capacity and compression bearingcapacity, low-cost and excellent anti-corrosion properties for use uponcertain geologic terrains and in harsh environmental conditions.

SUMMARY

In response to the above-referenced technical inadequacies, the presentdisclosure provides a helical pile and a bracket module comprising thesame. The helical pile is specially-designed with a specificelement-size ratio, thereby being able to feature both the upliftbearing capacity and the compression bearing capacity required by ahelical pile for use upon certain geologic terrains and in harshenvironmental conditions.

In one aspect, the present disclosure provides a helical pile includinga column body, at least a helical blade and a loading member. The columnbody has a fixing end, a loading end opposite to the fixing end, and abody section between the fixing end and the loading end. The helicalblade is disposed on the column body between the fixing end and theloading end. The loading member is connected to the loading end of thecolumn body and includes a flange. The ratio of the body diameter of thecolumn body to the blade diameter of the helical blade ranges from 1:3to 1:7.

In a preferable embodiment, the helical blade divides the body sectionfrom the loading end to the fixing end into a first section and a secondsection, and the ratio of the length of the first section to the lengthof the second section ranges from 6:1 to 2:1

In a preferable embodiment, the helical pile includes two helical bladeswhich divide the body section from the loading end to the fixing endinto a first section, a second section and a third section, wherein thefirst section has a length from 1000 to 2000 mm, the second section hasa length from 4500 to 5300 mm, and the third section has a length from50 to 150 mm.

In a preferable embodiment, the helical pile includes three helicalblades which divide the body section from the lading end to the fixingend into a first section, a second section, a third section and a fourthsection, wherein the first section has a length from 1000 to 2000 mm,the second section has a length from 2000 to 3000 mm, the third sectionhas a length from 2000 to 3000 mm, and the fourth section has a lengthfrom 50 to 150 mm.

In a preferable embodiment, the flange has a diameter from 100 to 300 mmand a thickness from 5 to 10 mm, and the flange has a plurality ofopenings.

In a preferable embodiment, the loading member further includes aplurality of reinforcing ribs each having two side surfaces with acertain geometrical shape and spaced apart from each other 3 to 10 mm;the plurality of reinforcing ribs each being attached to a lower surfaceof the flange and a body surface of the column body.

In a preferable embodiment, the helical blade has a diameter from 200 to500 mm, and the helical blade has a helical structure that surrounds thecolumn body for 1 to 2 turns.

In a preferable embodiment, the helical structure has a spacing from 50to 200 mm along the axial direction of the column body.

In a preferable embodiment, the helical pile further includes amulti-functional coating covering a surface of the column body and theat least one helical blade. The multi-functional coating includes anepoxy coating, a zinc-containing coating or a combination thereof, andthe epoxy coating has a thickness from 50 to 250 μm and thezinc-containing layer has a thickness from 50 to 350 μm.

Another aspect of the present disclosure provides a bracket moduleincluding a helical pile as described above and a connecting frame. Theconnecting frame is connected to the helical pile through the flange atthe loading end, and the connecting frame is configured to mount a solarcell panel thereon.

One of the major technical features of the present disclosure is thatthe helical piles and the bracket module comprising the same providedherein may be used in locations with peculiar geologic terrain, by wayof the unique design of the ratio between different members or sectionsin the structure, such as “the ratio of the body diameter of the columnbody to the blade diameter of the helical blade ranging from 1:3 to1:7”, and the incorporation of a multi-functional coating.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure will become more fully understood from thefollowing detailed description and accompanying drawings.

FIG. 1 is an orthographic side view of a helical pile according to theexisting art.

FIG. 2 is a perspective view illustrating a helical pile according to anembodiment of the present disclosure.

FIG. 3 is an orthographic side view of a helical pile according to afirst embodiment of the present disclosure.

FIG. 4 is an orthographic side view of a helical pile according to asecond embodiment of the present disclosure.

FIG. 5 is an orthographic back view of the helical pile according to thesecond embodiment of the present disclosure.

FIG. 6 is an orthographic side view of a helical pile according to athird embodiment of the present disclosure.

FIG. 7 is an orthographic side view of a helical pile according to afourth embodiment of the present disclosure.

FIG. 8 is an orthographic side view of a helical pile according to afifth embodiment of the present disclosure.

FIG. 9 is an orthographic side view of a helical pile according to asixth embodiment of the present disclosure.

FIG. 10 is an orthographic side view of a helical pile according to aseventh embodiment of the present disclosure.

FIG. 11 is an orthographic side view of a helical pile according to aneighth embodiment of the present disclosure.

FIG. 12 is an orthographic side view of a helical pile according to aninth embodiment of the present disclosure.

FIG. 13 is an orthographic front view of a bracket module provided by anembodiment of the present disclosure.

FIG. 14 is an orthographic side view of the bracket module provided bythe embodiment of the present disclosure.

FIG. 15A is a perspective view illustrating a helical pile according toa tenth embodiment of the present disclosure.

FIG. 15B is an orthographic side view illustrating the helical pileaccording to the tenth embodiment of the present disclosure.

FIG. 16A is a perspective view illustrating a helical pile according toa eleventh embodiment of the present disclosure.

FIG. 16B is an orthographic side view illustrating the helical pileaccording to the eleventh embodiment of the present disclosure.

FIG. 17A is a perspective view illustrating a helical pile according toa twelfth embodiment of the present disclosure.

FIG. 17B is an orthographic side view illustrating the helical pileaccording to the twelfth embodiment of the present disclosure.

FIG. 18A is a perspective view illustrating a helical pile according toa thirteenth embodiment of the present disclosure.

FIG. 18B is an orthographic side view illustrating the helical pileaccording to the thirteenth embodiment of the present disclosure.

FIG. 19A is a perspective view illustrating a helical pile according toa fourteenth embodiment of the present disclosure.

FIG. 19B is an orthographic side view illustrating the helical pileaccording to the fourteenth embodiment of the present disclosure.

FIG. 20A is a perspective view illustrating a helical pile according toa fifteenth embodiment of the present disclosure.

FIG. 20B is an orthographic side view illustrating the helical pileaccording to the fifteenth embodiment of the present disclosure.

FIG. 21A is a perspective view illustrating a helical pile according toa sixteenth embodiment of the present disclosure.

FIG. 21B is an orthographic side view illustrating the helical pileaccording to the sixteenth embodiment of the present disclosure.

FIG. 22A is a perspective view illustrating a helical pile according toa seventeenth embodiment of the present disclosure.

FIG. 22B is an orthographic side view illustrating the helical pileaccording to the seventeenth embodiment of the present disclosure.

FIG. 23A is a perspective view illustrating a helical pile according toa eighteenth embodiment of the present disclosure.

FIG. 23B is an orthographic side view illustrating the helical pileaccording to the eighteenth embodiment of the present disclosure.

FIG. 24A is a perspective view illustrating a helical pile according toa nineteenth embodiment of the present disclosure.

FIG. 24B is an orthographic side view illustrating the helical pileaccording to the nineteenth embodiment of the present disclosure.

FIG. 24C is a schematic view of a fixing plate used in the presentdisclosure.

DETAILED DESCRIPTION

The present disclosure is described in more detail through the followingexamples that are intended to be illustrative only because numerousmodifications and variations thereto will be apparent to those skilledin the art. Identical or similar numerals in the drawings indicateidentical or similar components throughout the views. As used in thedescription herein and throughout the claims that follow, unless thecontext clearly dictates otherwise, the meaning of “a”, “an”, and “the”includes plural reference, and the meaning of “in” includes “in” and“on”. Titles or subtitles are used herein for the convenience of thereader, which shall not affect the scope of the present disclosure.

The terms used herein generally have their ordinary meanings in the art.In the case of conflict, the present document, including any definitionsgiven herein, will prevail. The same item can be expressed in more thanone way. Alternative language and synonyms can be adopted for anyterm(s) discussed herein, and no specific significance is to be given towhether a term is elaborated on or discussed herein. A recital of one ormore synonyms does not exclude the use of other synonyms. The use ofexamples anywhere in this specification, including examples of anyterms, is illustrative only, and in no way limits the scope and meaningof the present disclosure or of any exemplified term. Likewise, thepresent disclosure is not limited to the various embodiments providedherein. Cardinal numbering terms such as “first”, “second” or “third”can be used to describe various components or the like, which are fordistinguishing one component from another only, and are not intended to,nor should they be construed to impose any substantive limitations onthe components or the like.

Reference is made to FIG. 2, wherein FIG. 2 is a perspective view of ahelical pile P according to one of the embodiments of the presentdisclosure. The helical pile P provided by the embodiment of the presentdisclosure includes a column body 1, at least a helical blade 2 and aloading member 3. As shown in the figure, the column body 1 has a fixingend 11, a loading end 12 opposite to the fixing end 11, and a bodysection 13 located between the fixing end 11 and the loading end 12.

In one embodiment of the present disclosure, the column body 1 may havea shape of a cylinder. Under this embodiment, the column body 1 may be ahollow tube or a solid cylinder to prevent rust from being caused bymoisture or other substances in the ambient air. When the column body 1is a hollow tube, the openings at the two ends of the tube may besealed, for example, by covers or any other means known in the art, toform a vacuum within the tube. On the other hand, when the column body 1is a solid cylinder, it may be formed by a one-piece molding process, orby filling a filler inside a hollow tube. Preferably, the column body 1is a solid cylinder formed by a one-piece molding process. Therefore,the overall stability of the helical pile P may be further secured.

The helical blade 2 is disposed on the column body 1 between the fixingend 11 and the loading end 12. The loading member 3 is connected to theloading end 12 of the column body 1 and includes a flange 31. In theembodiment shown in FIG. 2, the helical pile P includes three helicalblades 2. However, in other possible embodiments of the presentdisclosure, the number of helical blades 2 included in the helical pileP is not restricted. In the following embodiments, the helical pile Pmay include one, two, three or four helical blades 2.

Referring again to FIG. 2, the ratio of the body diameter a of thecolumn body 1 to the blade diameter b of the helical blade 2 is from 1:3to 1:7. It should be noted that as shown in FIG. 2, the fixing end 11 ofthe column body 1 of the helical pile P may have a cone shape, i.e., thediameter of the column body 1 becomes progressively smaller while movingalong the column body 1 towards the end of the fixing end 11 of thecolumn body 1, thereby resulting in the end of the fixing end 11 beingshaped as a pointed tip. Therefore, the body diameter a mentioned aboverefers to the diameter of the section of the column body 1 havinguniform diameter. Generally speaking, the body diameter a may be thediameter of the body section 13 of the column body 1. In the embodimentsof the present disclosure, the body diameter a may range from 25.4 to200 millimeters (mm) For example, in the embodiments of the presentdisclosure, the body diameter a may be 25.4 mm, 76.4 mm, 95 mm, 114 mmor 140 mm. In the embodiments of the present disclosure, the column body1 of the helical pile P may be a stainless-steel tube. The wallthickness of the column body 1 is at least 4 millimeters. In addition,the cone-shaped fixing end 11 may have a cone angle from 30 to 60degrees. However, the current disclosure is not limited thereto.

It should be noted that the fixing end 11 of the column body 1 of thehelical pile P does not necessarily need to have a progressively smallerdiameter. Alternatively, the fixing end 11 of the column body 1 of thehelical pile P may have a bevel cut, thereby allowing the helical pile Pto be easily screwed or inserted into the ground during the installationprocess. The beveled surface may have a tilt angle of from 30 to 60degrees with respect to the axis of the column body 1.

When the helical pile P of the embodiments of the present disclosureincludes two or more helical blades 2, these helical blades 2 may havethe same or different blade diameters b. When these helical blades 2have the same blade diameters b, the ratio of the body diameter a to theblade diameter b may range from 1:3 to 1:7. When these helical blades 2have different blade diameters b, the ratio of the body diameter a tothe blade diameter b of the smallest helical blade 2 may range from 1:3to 1:7. In other words, in the embodiment of the present disclosure, thehelical pile P includes at least a helical blade 2 having a diameter(blade diameter b) that is 3 to 7 times the body diameter a. When thesehelical blades 2 have different blade diameters b, in addition to thesmallest blade diameter b, the other blade diameter(s) b may be 3 to 10times the body diameter a. Moreover, the ratio of the blade diameter bto the thickness of the helical blade 2 is preferably smaller than 30.When the blade diameter b of the helical blade 2 is larger than or equalto 20 mm, the thickness of the helical blade 2 may be larger than 5 mm,and when the blade diameter b of the helical blade 2 is smaller than 20mm, the thickness of the helical blade 2 may be larger than 2 mm. Inaddition, the helical blades 2 and the column body 1 may be connected bya continuous soldering process, and the height of the solder may not behigher than the minimum wall thickness of the component to be soldered,i.e., the helical pile P.

In fact, based on extensive research conducted by the inventors of thepresent disclosure, when the ratio of the body diameter a of the columnbody 1 to the blade diameter b of the helical blade 2 ranges from 1:3 to1:7, the helical pile P exhibits an uplift bearing capacity appropriatefor a location having softer soil conditions. Further, when the ratio ofthe body diameter a of the column body 1 to the blade diameter b of thehelical blade 2 is within the above range, the uplift bearing capacityand compression bearing capacity of the helical pile P are suitablybalanced.

The compression bearing capacity (Q_(a)) of the helical pile P may becalculated from the following equation 1:

$\begin{matrix}{Q_{a} = {{\frac{Q_{S}}{{Fs}_{1}} + \frac{Q_{b}}{{Fs}_{2}}} = {\frac{f_{S}A_{s}}{{Fs}_{1}} + \frac{q_{b}A_{b}}{{Fs}_{2}}}}} & {{Equation}\mspace{14mu} 1}\end{matrix}$

In Equation 1, Q_(s) refers to the compression bearing capacity on thesurface of the helical pile, Q_(b) refers to the compression bearingcapacity of the end of the helical pile, f_(s) refers to the surfacefriction force of the helical pile (in KN/m²), A_(s) refers to thesurface area of the helical pile (in m²), q_(b) refers to the ultimatebearing force of the end of the helical pile (in KN/m²), A_(b) refers tothe cross sectional area of the end of the helical pile (m²), and FS₁and FS₂ are the safety coefficients (for example, 3.0).

The uplift bearing capacity (R_(a)) of the helical pile P may becalculated from the following Equation 2:

$\begin{matrix}{R_{a} = {W_{p} + \frac{f_{s}A_{s}}{FS}}} & {{Equation}\mspace{14mu} 2}\end{matrix}$

In Equation 2, f_(s) refers to the surface friction force of the helicalpile (in KN/m²), A_(s) is the surface area of the helical pile (in m²),W_(p) is the weight of the helical pile (in KN), and F_(S) is the safetycoefficient (for example, 3.0).

Based on these calculations, the helical pile P provided by theembodiments of the present disclosure features an uplift bearingcapacity (R_(a)) of larger than 35 KN and a compression bearing capacity(Q_(a)) of larger than 45 KN. In a preferred embodiment, the helicalpile P has an uplift bearing capacity (R_(a)) of larger than 40 KN and acompression bearing capacity (Q_(a)) of larger than 50 KN. Table 1 showssome examples of possible dimensions and the calculated compressionbearing capacity of the helical piles P/P′. The bearing capacity of ahelical pile P according to one of the embodiments (the ninethembodiment) will be described later.

TABLE 1 Dimensions of helical pile P (mm) helical blade Column body(blade diameter/ (column diameter/ Compression thickness/distancethickness/distance bearing total from the very end from the very endcapacity length of the fixing end) of the bearing end) (KN) 3000 100/10/2500 89/3.5/500 >230 2500  100/10/2000 89/3.5/500 183 2000 100/10/1500 89/3.5/500 54.4 1500  100/10/1000 89/3.5/500 36.3 1000 80/8.0/700 76/3.0/500 14.6 1500  80/8.0/1000 76/3.0/500 24.6 2000 80/8.0/1500 76/3.0/500 35.3 2500  80/8.0/2000 76/3.0/500 60.3 1000 80/8.0/1000 — 26.3 1500  80/8.0/1500 — 31.1 2000  80/8.0/2000 — 46.31000  100/10/1000 — 34.6 1500  100/10/1500 — 51.5 2000  100/10/2000 —62.6 1000  60/6.0/700 48/3.0/300 12.2 1200  60/6.0/900 48/3.0/300 17.41200  60/6.0/1200 48/3.0/300 21.2  800  50/5.0/500 42/3.0/300 7.8 1000 50/5.0/700 42/3.0/300 11.8 1200  50/5.0/900 42/3.0/300 13.8  300 30/4.0/300 — 3.2

Regarding the helical pile P of the embodiments of the presentdisclosure, the helical blade 2 may have a diameter ranging from 200 mmto 500 mm and a helical structure surrounding the column body 1 for 1 to2 turns. For example, the diameter of the helical blade 2 may be 200millimeter (mm), 250 mm, 300 mm, 350 mm, 400 mm, 450 mm or 500 mm, andthe helical structure of the helical blade 2 may surround the columnbody 1 for 1 turn, 1 and a quarter (1¼) turns, 1.5 turns, 1 and threequarter (1¾) turns or 2 full turns. In addition, the helical structureof the helical blade 2 has a spacing from 50 to 200 mm along the axialdirection of the column body 1. For example, the helical structure ofthe helical blade 2 has a spacing of 50 mm, 100 mm, 150 mm or 200 mmalong the axial direction of the column body 1. It should be noted that,when the helical pile P includes two or more helical blades 2, eachhelical blade may have different dimensions. The dimensions of thehelical blades 2 may be selected according to the requirements of thetarget application.

Referring still further to FIG. 2, specifically, in the helical pile Pprovided by the embodiments of the present disclosure, the loadingmember 3 located at the loading end 12 of the column body 1 isconfigured to be connected to the other support structures of the solarequipment. For example, the loading end 12 may be connected with aconnecting frame, wherein the connecting frame is for mounting the solarcell panel of the solar equipment thereon. The connecting frame mayinclude support structures, such as a tiltable support column and anupright column, etc., and the type and specific structure of theconnecting frame is not restricted in the present disclosure. Therefore,in the embodiments of the present disclosure, the loading member 3 mayinclude a flange 31 with a disc-like shape. In the figures of thepresent disclosure, the flange 31 is depicted with a disc-like shape.However, the present disclosure is not limited thereto, and the flange31 of the embodiments of the present disclosure may be configured with arectangular, oval, or polygonal shape, or any other geometric shapes.

However, in the embodiments of the present disclosure, the flange 31 ofthe loading member 3 preferably has a cross section of a hexagon shape.Therefore, the fixing and friction force between the loading member 3and the ground may be effectively increased.

In order to steadily connect the helical pile P to the other supportstructures, such as a connecting frame, the flange 31 may have one ormore openings 311 which are configured to connect the helical pile P andthe connecting frame through a fixing member, such as a screw. Theopening 311 may be a narrow through hole disposed along the edge of theflange 31 having a disc-like shape, whereby the positions of the fixingscrews may be selected and adjusted according to the actual needs. Inthe embodiments of the present disclosure, the disc-like flange 31 has adiameter from 100 mm to 300 mm and a thickness from 5 mm to 10 mm. Forexample, in the embodiments of the present disclosure, the flange 31 mayhave a diameter of 180 mm, 200 mm, 220 mm or 250 mm.

In addition, the loading member 3 configured to attach the helical pileP to the other support structures may further include a plurality ofreinforcing ribs 32. Each of the reinforcing ribs 32 attaches to boththe lower surface of the flange 31 and the body surface of the columnbody 1. Specifically, the lower surface of the flange 31 refers to thesurface of the disc-like flange 31 facing the fixing end 11 of thecolumn body 1. Thereby, the plurality of reinforcing ribs 32 aredisposed between the surfaces of the flange 31 and the column body 1.The reinforcing ribs 32 are configured to enhance the bearing capacityof the flange 31.

As shown in FIG. 2, the reinforcing ribs 32 of the embodiments of thepresent disclosure may have two side surfaces having a geometric shape,such as a trapezoid shape, and the two side surfaces are separated fromeach other by 3 mm to 10 mm. In other words, each of the reinforcingribs 32 may be a trapezoid-shaped thin plate, wherein the thickness ofthe thin plate is from 3 mm to 10 mm. It should be noted that in theembodiments of the present disclosure, the plurality of reinforcing ribs32 are optionally included in the column body 1. Therefore, the presentdisclosure is not limited to embodiments that include such reinforcingribs 32. Further, in the embodiments of the present disclosure, thereinforcing ribs 32 are not necessarily formed with trapezoid-shapedside surfaces, but with side surfaces with other similarly effectivegeometric shapes, such as triangular shapes.

In the embodiments of the present disclosure, regarding the reinforcingribs 32 which are formed as trapezoid-shaped thin plates, for example,with respect to the flange 31 having a diameter ranging from 100 mm to300 mm, the contact length between a reinforcing rib 32 and the bodysurface of the column body 1 may be from 80 to 120 mm. The long edge ofthe trapezoid-shape side surface of the reinforcing rib 32 is in contactwith the lower surface of the flange 31 and may have a length from 50 to60 mm. The short edge of the trapezoid-shape side surface of thereinforcing rib 32 may have a length from 30 to 40 mm.

In the embodiments of the present disclosure, the helical pile P mayfurther include a multi-functional coating covering the column body 1and the helical blade 2. In some embodiments of the present disclosure,the multi-functional coating may further cover the loading member 3. Forexample, the multi-functional coating may cover the flange 31 and theplurality of reinforcing ribs 32 of the loading member 3. In addition,in the bracket module M comprising the helical pile P provided by theembodiments of the present disclosure, the multi-functional layer mayfurther cover the fixing members (such as screws) connecting the helicalpile P to the connecting frame. The multi-functional coating may be anepoxy coating or a zinc-containing coating. Alternatively, themulti-functional layer may be a composite coating comprising an epoxycoating and a zinc-containing coating.

Specifically, the epoxy coating may be formed of a thermoplastic fusionbonded powder coating material using epoxy resin as the mainfilm-forming material, also referred to as “fusion bonded epoxy coatingpowders”. The above material for the epoxy coating is an inorganiccoating, and therefore, the problems of cathodic delamination andcathodic blisters related to organic coatings made from organicmaterials may be avoided. Regarding the disadvantage that the wetadhesion of the inorganic coating may deteriorate, the embodiments ofthe present disclosure provide the following specific manufacturingprocesses and materials formulation as possible solutions.

The manufacturing process for applying the epoxy coating, which servesas the multi-functional coating, on the helical pile P may include thesteps of performing a surface treatment on the helical pile P,pre-heating the helical pile P, applying the epoxy coating and curingthe epoxy coating, etc.

Specifically, within the manufacturing process, the surface of thehelical pile P may be subjected to various surface treatments, includingsharpening, heating to remove water within tiny gaps and defects andother volatile matter, cleaning to remove contaminants, and so on.Subsequently, the helical pile P may be pre-heated, and the pre-heatedtemperature may be lower than 275° C. Next, an electrostatic sprayingprocess, a friction electrostatic spraying process, a fluidized bedprocess, an electrostatic fluidized bed process, etc. may be used toapply the coating. Lastly, the coating may be cured under the pre-heatedtemperature, or by a further heated temperature. In the embodiments ofthe present disclosure, the epoxy coating may have a thickness rangingfrom 50 to 250 μm.

In addition, the epoxy powder coating material for forming the epoxycoating described above may have a density from 1.3 to 1.6 g/cm³ (forexample, as measured by the China GB/T 4472 Standard) and a volatilecontent of 0.6% or less (for example, as measured by the China GB/T 6554Standard). Further, the particle size distribution of the epoxy powdercoating material may have the following properties: 3% or less of whichhas a particle size of larger than 150 μm, and 0.2% or less of which hasa particle size of larger than 250 μm (for example, as measured by theChina GB/T 6554 Standard). Furthermore, the epoxy powder coatingmaterial may have a magnetic substance content of 0.002% or less (asmeasured by the China GB/T 6570 Standard).

When the epoxy coating is formed by fusion bonded epoxy coating powders,the epoxy coating may have an impact resistance of 3J or larger under−30° C., an abrasion resistance of 100 mg or less (as measured by theChina GB/T 1768 Standard), and a binding strength of 60 MPa or more (asmeasured by the China GB/T 6329 Standard). In addition, the epoxycoating may have a cathodic delamination/disbondment of 6.5 mm or less(at 65° C., 24 hours or 48 hours, as measured by the China SY/T 3042Standard), an electrical breakdown stress of 30 MV/m or larger (asmeasured by the China GB/T 141 Standard), and a volume resistivity of1×10¹³ Ω·m or more (as measured by the China GB/T 1410 Standard).

In fact, in the embodiments of the present disclosure, the method formanufacturing the epoxy coating is not limited to the process describedabove. In the embodiments of the present disclosure, a high-performancefusion binding epoxy coating technique or a high-performance non-solventliquid epoxy coating technique (SEBF/SLF high corrosion resistancetechnique) may be used to form the epoxy coating. The epoxy coatingformed by the high-performance fusion binding epoxy coating technique orthe high-performance non-solvent liquid epoxy coating technique may havethe advantages of achieving high binding strength, high impactresistance, high bending resistance and excellent medium permeationresistance, etc. Preferably, the epoxy coating formed by the abovetechniques may have a thickness ranging from 100 to 250 μm.Nevertheless, in some embodiments, the epoxy coating may have athickness larger than 250 μm. For example, regarding the structuresapplicable for use in highly corrosive environments, the coating mayhave a thickness larger than 300 μm, 600 μm or 1000 μm. In addition, theepoxy coating may be formed of two layers of epoxy coatings, one on topof the other. When using a double-layered epoxy coating as themulti-functional coating, the inner layer (which is closer to thehelical pile P) of the epoxy coatings may have a thickness of 250 μm orlarger, and the outer layer of the epoxy coatings may have a thicknessof 350 μm or larger.

Specifically, the epoxy coating formed by the high-performance fusionbinding epoxy coating technique or the high-performance non-solventliquid epoxy coating technique is a multi-layered composite structurewhich may include a surface sub-layer, an intermediate sub-layer and abottom sub-layer. The surface sub-layer provides the functions ofanti-aging, anti-wear and marine substances-resistance; the intermediatesub-layer provides the function of anti-water permeability; and thebottom sub-layer provides a high bonding strength between the compositestructure and the helical pile P. Even so, the above-mentionedsub-layers may be formed during a single coating process, and such acomposite structure may achieve an anti-corrosion effect good for atleast 30 years without combining with other coatings, such as a hot-dipgalvanizing coating. In other words, compared to a conventionalcomposite anti-corrosion technique that uses a combination of a primerand a finish coating, the SEBF/SLF high anti-corrosion technique mayprovide a single coating that may serve as both the primer and thefinish coating.

In the embodiments of the present disclosure, non-solvent liquid epoxycoating may have the properties shown in Table 2 below. In addition, thephysical properties of the epoxy coating according to the embodiments ofthe present disclosure may refer to the measurement standards andmeasured results listed for the fusion binding epoxy powder coatingmaterial by the China Standard GB/T18593-2010, for the non-solventliquid epoxy coating material by the China Standard GB/T 31361-2015, andfor the fusion binding epoxy powder coating technique for steel tubes bythe China Standard SY/T 0315-2013.

TABLE 2 properties of the epoxy measurement No. Item Unit coating method 1 Appearance — uniform color visual and luster, observation flatsurface, no bubbles, no crackles  2 Impact resistance J  ≥3 SY/T (−30°C.) 0315  3 Adhesion (75° C., 7d) degree(s) 1~2 SY/T 0315  4 Cathodicdelamination Mm  ≤6 SY/T (−1.5 V, 65° C. ± 0315 2° C., 2 days)  5Bending resistance — 1.5° PD, no SY/T (23° C.) peeling, no 0315 damage 6 Binding strength MPa ≥25, or GB/T preferably 18593-  ≥65 2010  7Abrasion resistance mg ≤100 GB/T (Cs10 cycles, 1768- 1 kg, 1000 r) 2006 8 Hardness H  ≥2 GB/T 6739  9 Electrical breakdown MV/m  ≥30 GB/Tstress 1408.1 10 volume resistivity Ω · m ≥1 × 10¹³ GB/T 1410- 2006 11salt mist resistance degrees  ≤1 GB/T (1000 h) 1771 12 weightingpercentage of %  ≤2 GB/T moisture absorption 18593- (distillation water,2010 60° C. ± 2° C., 15 days) weighting percentage of %  ≤1.5 GB/Tmoisture absorption 18593- (3.5% NaCl 60° C. ± 2010 2° C., 15 days) 13chlorides permeability mol/L ≤1×10⁻⁴ ISO (23° C. ± 2° C., 45 days)14655/ GB/T 25826

Alternatively, a zinc-containing coating that serves as amulti-functional coating may be a hot-dip galvanizing coating. In theembodiments of the present disclosure, the hot-dip galvanizing coatingmay have a thickness from 50 to 350 μm. Preferably, the hot-dipgalvanizing coating may have a thickness from 100 to 350 μm.

In the preferable embodiments of the present disclosure, themulti-functional coating is a composite coating including both an epoxycoating and a zinc-containing coating, and the composite coating mayinclude the combination of the epoxy coating and the zinc-containingcoating described above. Alternatively, the multi-functional layer maybe a composite coating formed by a VCI (Volatile corrosion inhibitor)Superimposed Zinc technique. In other words, the composite coating maybe achieved by the VCI Superimposed Zinc technique. Specifically, themulti-functional coating may be formed by the following process: fillingand attaching the volatile slow-release molecules into the surfacestructure of the metal material (the helical pile P) through VCI, andapplying a zinc-containing coating thereon. The zinc-containing coatingmay include scaly zinc powder. To be specific, the zinc-containingcoating may be formed by grinding spherical zinc particles intosheet-form zinc powder and mixing the zinc powder with additives. As aresult, compared to the process by using spherical zinc particlesdirectly to form the coating, the scaly zinc powder may cover thesurface of the VCI layer in a more compact and denser manner. Lastly,the hot-dip galvanizing coating may further include an aluminum coatingdisposed on the zinc-containing layer. The hot-dip galvanizing coatingformed by the process mentioned above may provide a sealing film whichprotects the surface of the metal material (the helical pile P) fromcorrosion. In other words, the hot-dip galvanizing coating may be usedas a high-performance physical shielding layer. In addition, because theresistivity of the zinc material (the zinc powder) is low, thezinc-containing layer formed therefrom may provide strongelectrical-chemical protection for the structure underneath. Further,the resulting multi-functional coating has stable properties undernormal temperature and pressure, and therefore is beneficial to themaintenance requirements of the equipment. In the embodiments of thepresent disclosure, the composite coating may have a thickness rangingfrom 100 to 600 μm. In a preferred embodiment, the composite coating mayhave a thickness of about 400 μm, in which the thickness of the epoxycoating may be about 50 μm, and the thickness of the zinc-containingcoating may be about 400 μm.

Compared to the hot-dip galvanizing coating (using a singlezinc-containing coating), the VCI Superimposed Zinc technique mayprovide a salt-mist resistance from 1000 to 1500 hours, or even asalt-mist resistance of approximately 2000 hours (as measured when thethickness is 30 μm; by comparison, the hot-dip galvanizing coating has asalt-mist resistance of 300 to 400 hours, as measured when the thicknessis 65 μm), and has a smooth and aesthetically-pleasing appearance.Although dust may be generated during the manufacturing process, unlikethe waste acids, gray water and gases that might be output by a hot-dipgalvanizing process, the dust may be simply recovered by filteringequipment. In addition, regarding the weather resistance capacity, thehot-dip galvanizing coating will turn gray after aging, while theappearance of the VCI Superimposed Zinc coating barely changes afterfive years. Therefore, in the embodiments of the present disclosure, itis preferable to use VCI Superimposed Zinc technique to form themulti-functional coating.

It should be noted that in the embodiments of the present disclosure,the fixing members, for example, the screws for securing and fixing thehelical pile P on the other supporting structures may be made fromstainless steel. And when dissimilar metals come into direct contactwith each other, a voltage difference can exist between them thathastens corrosion. But the multi-functional coating of the fixingmembers prevents such direct contact between the fixing members and thehelical pile P or the connecting frame, which reduces corrosion.

It should be noted that in some embodiments of the present disclosure,the helical pile P may be made without additionally including anyfunctional coatings. Alternatively, the helical pile P may be subjectedto specific processing procedure to undergo natural corrosion, therebyforming a surface layer with a protecting function from furthercorrosion on the surface of the helical pile P.

Next, the helical pile P provided by the embodiments of the presentdisclosure will be described in detail by the following specificembodiments. The content already disclosed in the above description willnot be reiterated in the following embodiments.

First Embodiment

Reference is made to FIG. 3. FIG. 3 is an orthographic side view of thehelical pile P1 according to a first embodiment of the presentdisclosure. The helical pile P1 of the first embodiment includes acolumn body 1, a helical blade 2 and a loading member 3. As shown in thefigure, the column body 1 has a fixing end 11, a loading end 12 oppositeto the fixing end 11, and a body section 13 located between the fixingend 11 and the loading end 12. The helical blade 2 is disposed betweenthe fixing end 11 and the loading end 12 of the column body 1. Theloading member 3 is connected to the loading end 12 of the column body 1and includes a flange 31 and a plurality of reinforcing ribs 32.

As shown in FIG. 3, the helical blade 2 divides the body section 13 intoa first section 131 and a second section 132 between the loading end 12and the fixing end 11, and the ratio of the length of the first section131 to that of the second section 132 is preferably from 6:1 to 2:1.Specifically, the length d1 of the first section 131 is the distancefrom the loading end 12 to the helical blade 2, and the length d2 of thesecond section 132 is the distance from the helical blade 2 to thefixing end 11. In the first embodiment of the present disclosure, thehelical blade 2 is located closer to the fixing end 11 in the bodysection 13.

As mentioned above, the fixing end 11 of the column body 1 of thehelical pile P may be cone-shaped, i.e., the terminal portion of thefixing end 11 of the column body 1 has a diameter that gradually tapers,and thereby results in the very end of the fixing end 11 being the tipof a cone. In the embodiments of the present disclosure, the helicalblade 2 may be disposed at a location that is directly adjacent to thelocation where the diameter of the column body 1 starts to taper. Inother words, the diameter of the column body 1 may start to graduallytaper from the location where the helical blade 2 is located whilemoving axially away from the loading end 12. As a result, the helicalblade 2 may provide excellent structural stability for the entirehelical pile P1. Further, when installing the helical pile P1 into theground, the cone-shaped fixing end 11 may facilitate easier insertion ofthe helical pile P1 into the ground, and the structural configuration ofthe helical blade 2 may subsequently provide a strong supporting effectthroughout the procedure of installing the helical pile P1 into theground. Moreover, the helical blade 2 disposed adjacent to the fixingend 11 may provide enhanced control of the angle of the helical pile P1with respect to the ground, and the depth of the helical pile P1 underthe ground may also be controlled more accurately. Thereby, the heightsof the helical piles P1 above the ground and the other supportingstructures connected thereto may be more easily adjusted.

In the first embodiment of the present disclosure, the diameter of thehelical blade 2 of the helical pile P1 is preferably 45 mm.

Second Embodiment

Reference is made to FIG. 4 and FIG. 5. FIG. 4 is an orthographic sideview of a helical pile according to a second embodiment of the presentdisclosure, and FIG. 5 is an orthographic back view of the helical pileaccording to the second embodiment of the present disclosure. Thehelical pile P2 of the second embodiment includes a column body 1, twohelical blades 2 and a loading member 3. The loading member 3 isconnected to the loading end 12 of the column body 1 and includes aflange 31 and a plurality of reinforcing ribs 32.

In the second embodiment, the two helical blades 2 have the same bladediameter b, wherein the blade diameter b is preferably 500 mm. The bodydiameter a of the column body 1 is preferably 76 mm Therefore, the ratioof a:b is preferably 1:6.58. In fact, in the present disclosure, whenthe helical pile P includes two helical blades 2, the two helical blades2 may divide the body section 13 into a first section 131, a secondsection 132 and a third section 133 between the loading end 12 and thefixing end 11, in which the first section 131 preferably has a lengthranging from 1000 to 2000 mm, the second section 132 preferably has alength ranging from 3500 to 4500 mm, and the third section 133preferably has a length ranging from 300 to 800 mm.

It should be noted that in the embodiments of the present disclosure,the total length of the column body 1 may be from 2 to 9 meters.Specifically, the total length of the column body 1 may be 2, 3, 6 or 9meters. In the preferred embodiment, the total length of the column body1 may be about 6 meters. In addition, in the embodiments including twohelical blades 2 on the body section 13 of the column body 1, the ratioof the lengths of the first section 131, the second section 132, and thethird section 133, d1:d2:d3, may be 5˜15:40˜60:1, wherein, preferably,d1:d2:d3 is about 10:49:1. For example, in a helical pile P having acolumn body 1 with a total length of about 6 meters, d1:d2:d3 may be10:49:1.

In fact, the determination of the size-ratio among the lengths of eachsection in the body section 13 may follow the principle below: when thehelical pile P is fixed in the ground, the helical blade 2 closest tothe loading end 12 should have a height of at least 1 meter above theground, and the helical blade 2 closest to the fixing end 11 should havea distance of at least 100 millimeters away from the very end of thefixing end 11. However, the present disclosure is not limited thereto.

In the second embodiment, the length d1 of the first section 131 ispreferably 1300 mm, the length d2 of the second section 132 ispreferably 1000 mm, and the length d3 of the third section 133 ispreferably 200 mm Therefore, the total length of the column body 1 ispreferably 2500 mm (2.5 m). In addition, each helical blade 2 preferablyhas a helical structure surrounding the column body of 1 to 1.5 turns,the thickness of each helical blade 2 is preferably 8 mm, and thehelical structure of each helical blade 2 preferably extends 108 mmalong the axial direction of the column body 1.

In the second embodiment, the flange 31 preferably has a diameter of 200mm and a thickness of 8 mm. As shown in FIG. 5, the loading member 3further has four reinforcing ribs 32 disposed around the column body 1,and these reinforcing ribs 32 each have two side surfaces preferablyformed in the shape of a trapezoid. The two side surfaces preferablyhave a spacing of 6 mm therebetween. Specifically, in the secondembodiment, the long edge of each trapezoidal side surface is preferably55.5 mm, the short edge thereof is preferably 35 mm, and the heightthereof is preferably 100 mm.

In addition, as shown in FIG. 5, the flange 31 of the loading member 3further includes four openings 311. The four openings 311 are arrangedaround the column body 1 and are spaced between the four reinforcingribs 32. Each of the four openings 311 is a narrow arc-shaped slot, andthe imaginary circle formed by the four openings 311 together preferablyhas a diameter of 130 mm. The radian measure of the arc of each opening311 with respect to the axis of the column body 1 is preferably 60°.

In the second embodiment, the helical pile P2 may be covered by amulti-functional coating having a thickness of preferably 300 μm ormore, and the multi-functional coating may be an epoxy coating. Theepoxy coating may be formed by a thermal setting fusion binding powderusing epoxy resin as the main film-forming material.

Third Embodiment

Reference is made to FIG. 6. FIG. 6 is an orthographic side view of ahelical pile according to a third embodiment of the present disclosure.The difference between the third embodiment and the second embodiment isthat the lengths of the column body 1 of the helical piles P2, P3 aredifferent.

The helical pile P3 of the third embodiment includes a column body 1,two helical blades 2 and a loading member 3. Similar to the secondembodiment, in the third embodiment, the loading member 3 is connectedto the loading end 12 of the column body 1 and includes a flange 31 anda plurality of reinforcing ribs 32. In the third embodiment, the twohelical blades 2 preferably have the same blade diameter b, which ispreferably 500 mm. The body diameter a of the column body 1 ispreferably 76 mm Therefore, the a:b ratio is preferably 1:6.58.

In the third embodiment, the length d1 of the first section 131 ispreferably 1700 mm, the length d2 of the second section 132 ispreferably 1500 mm, and the length d3 of the third section 133 ispreferably 200 mm Therefore, the total length of the column body 1 ispreferably 3400 mm (3.4 m). In addition, each of the helical blades 2has a helical structure surrounding the column body 1 for 1.5 turns, thethickness of each helical blade 2 is 8 mm, and the helical structure ofeach helical blade 2 preferably extends 108 mm along the axial directionof the column body 1.

In the third embodiment, the flange 31 preferably has a diameter of 200mm and a thickness of 8 mm. The details regarding the reinforcing ribs32 and the openings 311 are the same as those described in the secondembodiment.

In the third embodiment, the helical pile P3 may be covered by amulti-functional coating having a thickness of preferably 85 μm or more,and the multi-functional coating may be a hot-dip galvanized coating.

Fourth Embodiment

Reference is made to FIG. 7. FIG. 7 is an orthographic side view of thehelical pile P4 according to a fourth embodiment of the presentdisclosure. Similar to the second and third embodiments, the helicalpile P4 of the fourth embodiment includes two helical blades 2. Thedifference between the second, the third embodiments and the fourthembodiment is that the diameters of the two helical blades 2 aredifferent in the fourth embodiment.

Specifically, in the fourth embodiment, the helical blade 2 closer tothe fixing end 11 has a diameter of preferably 250 mm, and the otherhelical blade 2 has a diameter of preferably 350 mm. The body diameter aof the helical pile P4 is preferably 76.4 mm Therefore, in the helicalpile P4, the ratio of the body diameter a to the diameter b of thesmaller helical blade 2 is preferably 1:3.27.

In the fourth embodiment, the length d1 of the first section 131 ispreferably 2050 mm, the length d2 of the second section 132 ispreferably 600 mm, and the length d3 of the third section 133 ispreferably 150 mm Therefore, the total length of the column body 1 ispreferably 2800 mm (2.8 m). In addition, each of the helical blades 2has a helical structure surrounding the column body 1 for 1 turn; andthe helical structure of each helical blade 2 preferably extends for 100mm along the axial direction of the column body 1.

Further, different from the previous embodiments, the loading member 3of the helical pile P4 in the fourth embodiment has no reinforcing ribs.

Fifth Embodiment

Reference is made to FIG. 8. FIG. 8 is an orthographic side view of thehelical pile P5 according to a fifth embodiment of the presentdisclosure. The difference between the fourth embodiment shown in FIG. 7and the fifth embodiment shown in FIG. 8 is that the total length of thehelical pile P5 in the fifth embodiment is preferably 2500 mm.

Specifically, similar to the fourth embodiment, in the fifth embodiment,the helical blade 2 closer to the fixing end 11 has a diameter ofpreferably 250 mm, and the other helical blade 2 has a diameter ofpreferably 350 mm. The body diameter a of the helical pile P5 ispreferably 76.4 mm Therefore, in the helical pile P5, the ratio of thebody diameter a to the blade diameter b of the smaller helical blade 2is preferably 1:3.27. In addition, each of the helical blades 2 has ahelical structure surrounding the column body 1 for 1 turn. However, inthe fifth embodiment, the length d1 of the first section 131 ispreferably 1750 mm, the length d2 of the second section 132 ispreferably 600 mm, and the length d3 of the third section 133 ispreferably 150 mm Therefore, the total length of the column body 1 ispreferably 2500 mm (2.5 m).

Sixth Embodiment

Reference is made to FIG. 9. FIG. 9 is an orthographic side view of thehelical pile P6 according to a sixth embodiment of the presentdisclosure. The helical pile P6 of the sixth embodiment includes threehelical blades 2.

In the sixth embodiment, the three helical blades 2 have diameters ofpreferably 400 mm, 450 mm and 500 mm, starting from the helical blade 2closest to the fixing end 11. The body diameter a of the helical pile P6is preferably 76.4 mm Therefore, in the helical pile P6, the ratio ofthe body diameter a to the blade diameter b of the smallest helicalblade 2 is preferably 1:5.24.

In the sixth embodiment, the three helical blades 2 divide the bodysection 13 of the helical pile P6 into a first section 131, a secondsection 132, a third section 133 and a fourth section 134. The length d1of the first section 131 is preferably 1650 mm, the length d2 of thesecond section 132 is preferably 750 mm, the length d3 of the thirdsection 133 is preferably 750 mm, and the length d4 of the fourthsection 134 is preferably 150 mm Therefore, the total length of thecolumn body 1 is preferably 3300 mm (3.3 m). In addition, each of thehelical blades 2 has a helical structure surrounding the column body 1for 1 turn, and the helical structure of each helical blade 2 preferablyextends for 100 mm along the axial direction of the column body 1.

Seventh Embodiment

Reference is made to FIG. 10. FIG. 10 is an orthographic side view ofthe helical pile P7 according to a seventh embodiment of the presentdisclosure. The difference between the sixth embodiment shown in FIG. 9and the seventh embodiment shown in FIG. 10 is that the total length ofthe column body 1 of the helical pile P7 and the dimensions of thehelical blades 2 in the seventh embodiment differ from those of thehelical pile P6.

In the seventh embodiment, each of the three helical blades 2 has ablade diameter b of preferably 450 mm. The body diameter a of thehelical pile P7 is preferably 76.4 mm Therefore, in the helical pile P7,the ratio of the body diameter a to the blade diameter b is preferably1:5.89.

In the seventh embodiment, the three helical blades 2 divide the bodysection 13 of the helical pile P7 into a first section 131, a secondsection 132, a third section 133 and a fourth section 134. The length d1of the first section 131 is preferably 1150 mm, the length d2 of thesecond section 132 is preferably 750 mm, the length d3 of the thirdsection 133 is preferably 750 mm, and the length d4 of the fourthsection 134 is preferably 150 mm Therefore, the total length of thecolumn body 1 is preferably 2800 mm (2.8 m). In addition, each helicalblade 2 has a helical structure surrounding the column body 1 for 1turn; and the helical structure of each helical blade 2 preferablyextends for 100 mm along the axial direction of the column body 1.

Eighth Embodiment

Reference is made to FIG. 11. FIG. 11 is an orthographic side view ofthe helical pile P8 according to an eighth embodiment of the presentdisclosure. The helical pile P8 of the eighth embodiment has fourhelical blades 2.

In the eighth embodiment, each of the four helical blades 2 preferablyhas a blade diameter b of 350 mm. The body diameter a of the helicalpile P8 is preferably 76.4 mm Therefore, in the helical pile P8, theratio of the body diameter a to the blade diameter b is preferably1:4.58.

In the eighth embodiment, the four helical blades 2 divide the bodysection 13 of the helical pile P8 into a first section 131, a secondsection 132, a third section 133, a fourth section 134 and a fifthsection 135. The length d1 of the first section 131 is preferably 850mm, the length d2 of the second section 132 is preferably 600 mm, thelength d3 of the third section 133 is preferably 600 mm, the length d4of the fourth section 134 is preferably 600 mm, and the length d5 of thefifth section 135 is preferably 150 mm Therefore, the total length ofthe column body 1 is preferably 2800 mm (2.8 m). In addition, eachhelical blade 2 has a helical structure surrounding the column body 1for 1 turn, and the helical structure of each helical blade 2 preferablyextends for 100 mm along the axial direction of the column body 1.

Nineth Embodiment

Reference is made to FIG. 12. FIG. 12 is an orthographic side view of ahelical pile P9 according to a ninth embodiment of the presentdisclosure. The helical pile P9 of the ninth embodiment includes threehelical blades 2. Further, the loading member 3 of the helical pile P9of the ninth embodiment includes a flange 31 and a plurality ofreinforcing ribs 32, wherein each of the side surfaces of thereinforcing ribs 32 is preferably triangular. Each of the three helicalblades 2 preferably has a diameter of 500 mm. In addition, the bodydiameter a of the column body 1 of the helical pile P9 is preferably 140mm, and, therefore, in the ninth embodiment, the ratio of the bodydiameter a to the blade diameter b is preferably about 1:3.57.

In the ninth embodiment, the three helical blades 2 divide the bodysection 13 of the helical pile P9 into a first section 131, a secondsection 132, a third section 133 and a fourth section 134. The length d1of the first section 131 is preferably 2500 mm, the length d2 of thesecond section 132 is preferably 1500 mm, the length d3 of the thirdsection 133 is preferably 1500 mm, and the length d4 of the fourthsection 134 is preferably 500 mm Therefore, the total length of thecolumn body 1 is preferably 6000 mm (6 m). In addition, each helicalblade 2 has a helical structure surrounding the column body 1 for 1turn.

When the helical pile P9 of the ninth embodiment is fixed into theground, the length of the helical pile P9 below the surface ispreferably 5500 mm (5.5 m).

The compression bearing capacity (Q_(a)) and the uplift bearing capacity(R_(a)) of the helical pile P9 exemplified in the ninth embodiment arecalculated according to equations 1 and 2 mentioned above. Thedimensions and the calculated parameters of the helical pile P9 arelisted in the following Table 3.

TABLE 3 Item Resulting value Unit Body diameter a  0.14 m Blade diameterb  0.50 m Projected area of the helical blade (Ad)  0.18  m² Spacing ofthe helical blades (S) 3.0 m Circumference of the helical pile (μ1) 0.44 m Circumference of the helical blade (μ2)  1.57 m Depth in theground above the helical blade  1.90 m closest to the loading endAverage N value of the soil above the  5.00 helical blade closest to theloading end (Ni) Average N value of the soil between the 10.00 helicalblades (N2) Average N value of the soil under the 10.00 helical bladeclosest to the fixing end (N3) Average side resistance force of the soil16.67 Kpa above the helical blade closest to the loading end (fs1)Average side resistance force of the soil 33.33 Kpa between the helicalblades (fs2) Ultimate point resistance at the fixing end 300.00  Kpa ofthe helical pile (qb) Ultimate compression bearing capacity 221.63  KN(Quk) Ultimate uplift bearing capacity (Quk) 189.86  KN Compressionbearing capacity (Q_(a)) 73.88 KN uplift bearing capacity (R_(a)) 63.29KN Total length of the helical pile  5.50 m

Based on Table 3, the helical pile P9 of the ninth embodiment has acompression bearing capacity of 73.88 KN and an uplift bearing capacityof 63.29 KN. In other words, the helical pile P9 possesses excellentstrength performance.

Tenth Embodiment

Reference is made to FIGS. 15A and 15B. The helical pile P10 provided bythe instant disclosure may include two helical blades 2. The totallength of the helical pile P10 may be 4000 mm. Further, the loadingmember 3 of the helical pile P10 of the tenth embodiment includes aflange 31 and a plurality of reinforcing ribs 32. Each of the twohelical blades 2 preferably has a diameter of 450 mm. Among the twohelical blades 2, the helical blade 2 farther from the fixing end 11 maybe distanced in 1200 mm from the fixing end 11 and has a helicalstructure surrounding the column body 1 for 1.5 turns. The helicalstructure may have a length of 200 mm along the long axis direction ofthe column body 1.

The helical blade 2 adjacent to the fixing end 11 is a discontinuoushelical pile which is configured by two blades that together surroundthe column body 1 for 1 turn. Each of the two blades is chamfered byabout 45 degrees from the ground for enabling the helical pile 10 to beeasily drilled into the ground.

In addition, the fixing end 11 of the helical pile 10 does not have aconical shape as those in the previous embodiments. In the presentembodiment, the column body 1 is a hollow circular tube and the fixingend 11 has an open structure as shown in the figures.

In the tenth embodiment, the helical pile P10 further has amulti-functional coating which is formed by SEBF technique and has athickness equal to or larger than 300 μm.

Eleventh Embodiment

Reference is made to FIGS. 16A and 16B. The helical pile P11 provided bythe instant disclosure may have two helical blades 2. The total lengthof the helical pile P11 may be 2500 mm. Further, the loading member 3 ofthe helical pile P11 of the eleventh embodiment includes a flange 31 anda plurality of reinforcing ribs 32. In the present embodiment, the twohelical blades 2 may have different diameters. Among the two helicalblades 2, the helical blade 2 farther from the fixing end 11 may have ahelical structure surrounding the column body 1 for 1.5 turns.

In addition, it should be noted that the fixing end 11 of the helicalpile P11 has a conical-shaped structure which is attached and fixed tothe fixing end 11 of the column body 1 through a fixing structure F.Besides, in the present embodiment, the helical blade 2 adjacent to thefixing end 11 may be a continuous blade having a helical structuresurrounding the column body 1 for 1 turn and a chamfered structure T forenabling the helical pile 11 to be easily drilled into the ground.

Twelfth Embodiment

Reference is made to FIGS. 17A and 17B. The helical pile P12 provided bythe instant disclosure may have two helical piles 2. The total length ofthe helical pile P12 may be 3000 mm. Further, the loading member 3 ofthe helical pile P12 of the twelfth embodiment includes a flange 31 anda plurality of reinforcing ribs 32. Both of the two helical blades 2preferably have a diameter of 350 mm. The distance between the twohelical blades 2 may be about 1200 mm Both of the two helical blades 2have a helical structure surrounding the column body 1 for 1.5 turns.The helical structure extends 200 mm along the long axis direction ofthe column body 1.

It should be noted that the fixing end 11 of the helical pile P12 mayhave a cruciate (cross) structure. As shown in FIG. 17A, specifically,the cruciate structure may be formed by two plate structures inequilateral triangle shape. The height, bottom length and thickness foreach of the plate structures may be 150 mm, 168 mm and about 10 mm,respectively. Therefore, the fixing end 11 of the helical pile P12 mayhave a structure similar to that of a Philips screwdriver forfacilitating the drilling of the helical pile P12 into the groundthrough the helical blades 2.

Thirteenth Embodiment

Reference is made to FIGS. 18A and 18B. The helical pile P13 provided bythe instant disclosure may have two helical piles 2. The total length ofthe helical pile P13 may be 3000 mm. Further, the loading member 3 ofthe helical pile P13 of the thirteenth embodiment includes a flange 31and a plurality of reinforcing ribs 32. Different from the twelfthembodiment, the two helical piles 2 have different diameters and bothhave a helical structure surrounding the column body 1 for 1.5 turns.The helical pile 2 adjacent to the fixing end 11 is 500 mm away from thefar end of the helical pile P13, and the distance between the twohelical piles 2 may be about 1000 mm.

In addition, similar to the twelfth embodiment, the fixing end 11 of thehelical pile P13 may have a cruciate (cross) structure for facilitatingthe drilling of the helical pile P13 into the ground through the helicalblades 2. Specifically, the cruciate structure may be formed by twoplate structures in equilateral triangle shape. The height, bottomlength and thickness of each of the plate structures may be 120 mm, 102mm and about 10 mm, respectively.

Fourteenth Embodiment

Reference is made to FIGS. 19A and 19B. The helical pile P14 of theinstant disclosure may have two helical blades 2. The total length ofthe helical pile P14 may be 3000 mm. Further, the loading member 3 ofthe helical pile P14 of the fourteenth embodiment includes a flange 31and a plurality of reinforcing ribs 32. Different from the thirteenthembodiment, one of the helical blades 2 may have a helical structuresurrounding the column body 1 for 1.5 turns, and the other helical blade2 may have a helical structure surrounding the column body 1 for 2turns. The helical blade 2 adjacent to the fixing end 11 is away fromthe far end of the helical pile P14 for about 500 mm, and the distancebetween the two helical piles 2 may be about 1000 mm.

In addition, similar to the thirteenth embodiment, the fixing end 11 ofthe helical pile P14 may have a cruciate (cross) structure forfacilitating the drilling of the helical pile P14 into the groundthrough the helical blades 2. The dimension of the cruciate structuremay be the same as that described in the thirteenth embodiment.

Fifteenth Embodiment

Reference is made to FIGS. 20A and 20B. The helical pile P15 provided bythe instant disclosure may have two helical blades 2. The total lengthof the helical pile P15 may be 4000 mm. Further, the loading member 3 ofthe helical pile P15 of the fifteenth embodiment includes a flange 31and a plurality of reinforcing ribs 32. The two helical blades 2 mayhave different diameters (for example, 400 mm and 250 mm, respectively),but both have a helical structure surrounding the column body 1 for 1.5turns. The helical blade 2 adjacent to the fixing end 11 is away fromthe far end of the helical pile P15 for about 500 mm, and the distancebetween the two helical piles 2 may be about 1400 mm.

In addition, similar to the fourteenth embodiment, the fixing end 11 ofthe helical pile P15 may have a cruciate (cross) structure forfacilitating the drilling of the helical pile P15 into the groundthrough the helical blades 2. Specifically, the cruciate structure maybe formed by two plate structures in equilateral triangle shape. Theheight, bottom length and thickness of each of the plate structures maybe 150 mm, 152 mm and about 10 mm, respectively.

Sixteen Embodiment

Reference is made to FIGS. 21A and 21B. The helical pile P16 provided bythe instant disclosure may have two helical blades. The total length ofthe helical pile P16 may be 4000 mm. Further, the loading member 3 ofthe helical pile P16 of the Sixteen embodiment includes a flange 31 anda plurality of reinforcing ribs 32. The helical blade 2 farther awayfrom the fixing end 11 may have a diameter of 400 mm and a helicalstructure surrounding the column body 1 for 1.5 turns. The helical blade2 adjacent to the fixing end 11 may be a discontinuous helical bladewhich is configured by two blades that together surround the column body1 for 2 turns. The helical blade 2 adjacent to the fixing end 11 is awayfrom the far end of the helical pile P16 for about 500 mm. The distancebetween the two helical blades 2 may be about 1400 mm.

In addition, similar to the fifteenth embodiment, the fixing end 11 ofthe helical pile P16 may have a cruciate (cross) structure forfacilitating the drilling of the helical pile P16 into the groundthrough the helical blades 2. The dimension of the cruciate structuremay be the same as that described in the fifteenth embodiment.

Seventeenth Embodiment

Reference is made to FIGS. 22A and 22B. The helical pile P17 provided bythe instant disclosure may include three helical blades 2. The totallength of the helical pile P17 may be 5800 mm. Further, the loadingmember 3 of the helical pile P17 of the seventeenth embodiment includesa flange 31 and a plurality of reinforcing ribs 32. Among the threehelical blades 2, the two helical blades 2 farther away from the fixingend 11 may have the same diameter (500 mm), and the helical blade 2adjacent to the fixing end 11 may have a diameter of 350 mm. The threehelical blades 2 all have a helical structure surrounding the columnbody 1 for 1.5 turns. The helical blade 2 adjacent to the fixing end 11is away from the far end of the helical pile P17 for about 500 mm, andthe distances between either two of the three helical blades 2 may beabout 1400 mm.

In addition, similar to the sixteenth embodiment, the fixing end 11 ofthe helical pile P17 may have a cruciate (cross) structure forfacilitating the drilling of the helical pile P17 into the groundthrough the helical blades 2. The dimension of the cruciate structuremay be the same as that described in the sixteenth embodiment.

Eighteenth Embodiment

Reference is made to FIGS. 23A and 23B. The helical pile P18 provided bythe instant disclosure may include three helical blades 2. The totallength of the helical pile P18 may be 5800 mm. Further, the loadingmember 3 of the helical pile P18 of the eighteenth embodiment includes aflange 31 and a plurality of reinforcing ribs 32. Among the threehelical blades 2, the two helical blades 2 farther away from the fixingend 11 may have the same diameter (500 mm) and have a helical structuresurrounding the column body 1 for 1.5 turns. The helical blade 2adjacent to the fixing end 11 is configured by two blades that togethersurround the column body 1 for 2 turns and has a diameter of about 350mm. The distance between either two of the three blades 2 may be about1400 mm.

In addition, similar to the seventeenth embodiment, the fixing end 11 ofthe helical pile P18 may have a cruciate (cross) structure forfacilitating the drilling of the helical pile P18 into the groundthrough the helical blades 2. The dimension of the cruciate structure isthe same as that described in the seventeenth embodiment.

Nineteenth Embodiment

Reference is made to FIGS. 24A and 24B. The helical pile P19 of theinstant disclosure may have two helical blades 2. The total length ofthe helical pile P19 may be 3500 mm. Further, the loading member 3 ofthe helical pile P19 of the nineteenth embodiment includes a flange 31but does not include any reinforcing rib. Among the two helical blades2, the helical blade 2 farther away from the fixing end 11 may have adiameter of 400 mm and a helical structure surrounding the column body 1for 1.5 turns. The helical blade 2 adjacent to the fixing end 11 mayhave a diameter of about 200 mm and a helical structure surrounding thecolumn body 1 for 1 turn. The helical blade 2 adjacent to the fixing end11 is away from the fixing end 11 for about 50 mm.

It should be noticed that the helical pile P19 of the nineteenthembodiment may further include at least one stabilizing blade 2″ on thecolumn body 1 and disposed between the two helical blades 2. Thedistance between the stabilizing blade 2″ and the helical blades 2farther away from the fixing end 11 may be about 1200 mm Specifically,the stabilizing blade 2″ may be formed by two arc-shaped blades 21′. Asshown in FIGS. 24A and 24B, the arc-shaped blade 21 may include a mainportion 211′ and inclined portions 212′ located at the two ends of themain portion 211′. The two inclined portions 212′ are inclined towarddifferent directions relative to the main portion 211′. Preferably, inthe present embodiment, one of the inclined portions 212′ of one of thearc-shaped blades 21′ inclines towards a different direction from thatof the inclined portion 212′ of the other arc-shaped blade 21′ adjacentto the aforementioned inclined portion 212′. In other words, the mainportions 211′ of the two arc-shaped blades 21′ are substantiallyparallel to each other, while the inclined portions 212′ affiliated todifferent arc-shaped blades 21′ but adjacent to each other inclinetoward two different directions from the parallel surfaces of the mainportions 211′.

According to the design of the stabilizing blade 2″, in the environmentwhere the helical pile P19 is installed, even if an extreme weather,such as a typhoon or hurricane with strong wind or rain, is occurringand causing high water content or a water-saturated state in the soil,the helical pile P19 may possess reinforced side-shear force to preventfrom inclining upon the saturated soil.

Furthermore, in the nineteenth embodiment, the column body 1 of thehelical pile P19 may be a hollow circular tube and the fixing end 11 hasan open structure. In addition, a fixing plate 111 may be disposed onthe open structure of the fixing end 11 of the helical pile P19.Reference is made to FIG. 24C, in one embodiment of the instantdisclosure, the fixing plate 111 may have a plate structure with apointy angle and may be secured and fixed to the fixing end 11 through agroove 14 on the fixing end 11 of the column body 1.

Furthermore, the present disclosure provides a bracket module. Referenceis made to FIG. 13 and FIG. 14. FIG. 13 is an orthographic front view ofa bracket module provided by an embodiment of the present disclosure,and FIG. 14 is an orthographic side view of the bracket module providedby the embodiment of the present disclosure.

As shown in FIG. 13 and FIG. 14, the bracket module M provided by theembodiments of the present disclosure includes helical piles P and aconnecting frame B, wherein the connecting frame B is connected to thehelical pile P through the flange 31 of the loading end 12 of thehelical piles P by fixing members, such as screws. The connecting frameB is configured to mount a solar cell panel S. In fact, the helicalpiles P included in the bracket module M may be any of the helical pilesP1˜P9, such helical piles P including a column body 1, at least ahelical blade 2 and a loading member 3 as described above. Therefore,the details of the helical piles P, P1˜P9 will not be reiterated herein.

Specifically, as shown in FIG. 14, the helical pile P is connected tothe connecting frame B through the flange 31. As mentioned above, theflange 31 of the helical pile P may include a plurality of openings 311(not shown in FIG. 14) for connecting the helical pile P to theconnecting frame B through fixing members, such as screws.

Further, regarding the different conditions of the ground or soil at theinstallation locations, the helical piles P and the bracket module Mincluding the helical piles P provided by the embodiments of the presentdisclosure may be installed according to different constructionguidelines. As long as a suitable installation process is utilized, thehelical piles P and the bracket module M including the helical piles Pprovided by the embodiments of the present disclosure are applicable tolocations with various types of soil ranging from Grade 1 to Grade 7.

TABLE 4 Soil Soil Soil Construction Grade property components guideline1 Top soil sand, gravel, sediment 2 Liquified Liquids and Applicable,but soil slurry groundwater the strength of the soil is insufficient 3Loose soil Loose sand, gravel, Applicable with or the mixture thereoflittle resistance 4 Loose soil Sand, gravel, mud and clay, Applicablewith with wherein at least 15% of the soil little resistance viscositycontent is components with particle sizes of less than 0.06 mm; andwherein rocks with a diameter of less than 64 mm (2.5 inches) and avolume of less than 0.01 m³ are less than 30% of the total soil content5 Soil with The content of rocks with a Applicable with rocks diameterof larger than 63 mm large resistance (2.5 inches) and a volume of 0.01m³ is larger than 30% 6 Movable Soil with rocks, connected Helical holesstony soil tightly, fragile, with must be formed slate, and weathered inadvance 7 Movable Small rocks with structural Helical holes hard rocksstrength, weathered mudstone, must be formed slag, iron ore, etc. inadvance

In summary, one of the major technical features of the presentdisclosure is that the helical piles P, P1˜P9 and the bracket module Mincluding the same provided by the embodiments of the present disclosureare applicable for use at locations with peculiar geologic natureaccording to the specially-defined size-ratio of the members andcomponents in the structure thereof, for example, “the ratio of the bodydiameter a of the column body 1 to the blade diameter b of the helicalblade 2 is from 1:3 to 1:7”, and the feature of the providedmulti-functional coatings.

Specifically, the structural design of the helical pile P of the presentdisclosure includes enlarged helical blade(s) (the helical blades 2 havea blade diameter b relatively larger than the body diameter a of thecolumn body 1) which provide excellent compression bearing capacity anduplift bearing capacity. Therefore, compared to a concrete pile of theexisting art, for example, a concrete pile with a length of 18 m, thehelical pile P of the present disclosure may only be formed with acomparatively short length of 6 m but achieve equivalent levels ofbearing capacity. In addition, the bracket module M may have a pluralityof helical piles P with small spacing therebetween, and even though thenumber of the helical piles P required in a bracket module M is morethan the number of the concrete piles required in the existing art,these helical piles P share the load evenly, and therefore, the material(stainless steel) required for making the connecting frame B thatattaches to the helical piles P within the bracket module M is reducedsignificantly, thereby largely reducing the manufacturing cost.

As mentioned above, the bracket module M including the helical piles Pmay include a plurality of helical piles P with small spacingtherebetween, wherein beams may be used to connect between each of thevertical columns in the connecting frame B. As such, construction pathsmay be easily provided in the bracket module M through these beamsduring the construction process, thereby reducing the cost for buildingadditional construction paths from scratch, and the construction andinstallation of the upper connecting frame B and the solar cell panelsmay be facilitated conveniently and efficiently.

It should be noted that power stations with solar equipment using thebracket module M may be disassembled at the conclusion of the life cycleof the solar equipment (for example, 25 years), at which point thehelical piles P adopted in the bracket module M may be pulled-out of theground by machinery and the material thereof may be recovered andrecycled. And the ground of such a location may also be readily returnedto its original use. Compared to the concrete piles of the existing artwhich are difficult to extricate from the ground and are sometimes leftbehind, the helical piles P of the present disclosure are much moreenvironmentally friendly.

In addition to the selections of the dimensions for the members and thecomponents of the helical pile P, some of the embodiments of the presentdisclosure further include a multi-functional coating formed by specificmanufacturing processes, such as an epoxy coating or a zinc coating, ora composite coating including a multi-coating structure, therebysignificantly increasing the durability of the installed helical pilesP. Specifically, the helical piles P provided by the embodiments of thepresent disclosure may endure for the typical life cycle of a solar cellpower station, which can be more than 20 years.

The above embodiments were chosen and described in order to explain theprinciples of the disclosure and their practical application, so as toenable others skilled in the art to utilize the disclosure in variousembodiments and with various modifications as are suited to theparticular use contemplated. Alternative embodiments will be apparent tothose skilled in the art to which the present disclosure pertainswithout departing from its spirit and scope.

What is claimed is:
 1. A helical pile including: a column body having afixing end, a loading end opposite to the fixing end, and a body sectionbetween the fixing end and the loading end; at least one helical bladedisposed on the column body between the fixing end and the loading end;and a loading member connected to the loading end of the column body andincluding a flange; wherein the ratio of the body diameter of the columnbody to the blade diameter of the helical blade ranges from 1:3 to 1:7;wherein the column body is a hollow tube, and the openings at the twoends of the hollow tube are sealed to form a vacuum within the hollowtube; wherein the flange has a cross section of a hexagon shape; andwherein the helical pile is subjected to a processing procedure toundergo natural corrosion, thereby forming a surface layer withprotecting function from further corrosion.
 2. A helical pile including:a column body having a fixing end, a loading end opposite to the fixingend, and a body section between the fixing end and the loading end; atleast one helical blade disposed on the column body between the fixingend and the loading end; and a loading member connected to the loadingend of the column body and including a flange; wherein the ratio of thebody diameter of the column body to the blade diameter of the helicalblade ranges from 1:3 to 1:7; wherein the column body is a solidcylinder; wherein the flange has a cross section of a hexagon shape; andwherein the helical pile is subjected to a processing procedure toundergo natural corrosion, thereby forming a surface layer withprotecting function from further corrosion.
 3. The helical pileaccording to claim 1 or 2, wherein the at least one helical bladedivides the body section into at least a first section and a secondsection between the loading end and the fixing end, and the ratio of thelength of the first section to the length of the second section rangesfrom 6:1 to 2:1.
 4. The helical pile according to claim 1 or 2, whereinthe helical pile includes two helical blades which divide the bodysection into a first section, a second section and a third sectionbetween the loading end and the fixing end, and the first section has alength ranging from 1000 to 2000 mm, the second section has a lengthranging from 4500 to 5300 mm, and the third section has a length rangingfrom 50 to 150 mm.
 5. The helical pile according to claim 1 or 2,wherein the helical pile includes three helical blades which divide thebody section into a first section, a second section, a third section anda fourth section between the loading end and the fixing end, and thefirst section has a length ranging from 1000 to 2000 mm, the secondsection has a length ranging from 2000 to 3000 mm, the third section hasa length ranging from 2000 to 3000 mm, and the fourth section has alength ranging from 50 to 150 mm.
 6. The helical pile according to claim1 or 2, wherein the flange has a diameter ranging from 100 to 300 mm anda thickness ranging from 5 to 10 mm, and the flange has a plurality ofopenings.
 7. The helical pile according to claim 1 or 2, wherein theloading member further includes a plurality of reinforcing ribs eachhaving two side surfaces with a certain geometrical shape that areseparated from each other by 3 to 10 mm; the plurality of reinforcingribs each being attached to a lower surface of the flange and a bodysurface of the column body.
 8. The helical pile according to claim 1 or2, wherein the at least one helical blade has a diameter ranging from200 to 500 mm and a helical structure surrounding the column body for 1to 2 turns.
 9. The helical pile according to claim 8, wherein thehelical structure extends from 50 to 200 mm along the axial direction ofthe column body.
 10. The helical pile according to claim 1 or 2, whereinthe fixing end has a cruciate structure.
 11. The helical pile accordingto claim 4, further includes at least one stabilizing blade on thecolumn body and disposed between the two helical blades.
 12. A bracketmodule including the helical pile according to claim 1 or 2 and aconnecting frame, wherein the connecting frame is connected to thehelical pile via the flange at the loading end, and the connecting frameis for mounting a solar cell panel thereon.